Motor-vehicle control mechanism



MOTOR VEHICLE CONTROL MECHANISM vFiled Jan. 22, 1924- INVENTOR I4ENRYEIHUKHJ.

ATTORNEY ing my invention.'

Patented Sept. v

l 1,553,615y PATENT OFFICE.

`HENRY n. HUKILL, or PITTSBURGH, PENNSYLVANIA, AssIGNoR To THE WESTING- HOUSE AIiiJ BRAKE COMPANY, or WILMERDING, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

MQTORrVEI-IICLE CONTROL vMECB-.ANISltl..

To all whom it may cof/wem:

Be it known that I, HENRY D. HUKILL, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Motor-Vehicle Control Mechanisms, of which the following is a specification. This invention relates to safety control equipments for motor vehicles, and more particularly as adapted for automotive passenger busses. 1

One object of my invention is to provide an equipment of the above character in `which by the operation of an emergency device, the brakes will be applied, the doors opened, the engine throttle closed, and the clutch pedal thrown to release the clutch.

In the accompanying drawing, the single figure is a diagrammatic view of a motor vehicle safety control equipment embody- As shown in the drawing, the equipmentmay comprise a fluid pressure door engine '1, a door controlling valve device 2, a brake chamber 3, and a brake valve device 4. The door engine 1 may comprise a casing having a piston chamber 5 containing piston 6 andl a piston chamber 7 containing a piston 8. The pistons'v and 8 are connected together by Aa rack rod 9, the teeth ofA which are adapted to mesh with a pinion 1Q and the rotationV of said vpinion being adapted to effect the opening and closing oli the vehicle doors.

The door controlling valve device 2 may comprise a casing having a pistoncliainber 11 containing a piston 12 anda valve chamber 13 containing a slide valve 14 adapted to be operated by piston 12. A valve 15 having an operating lever 16 is operated to control the admission of Huid under pressure to piston chamber 11 and said valve lever 16 is operatively connected to the usual clutch operating lever .17 of the motor vehicle through a rod 18 having yoke 19 at one end provided vwith an elongated slot 2O in which a pin 21 carried by lever 17 engages.

The brake chamber 3 may comprise flanged casing `sections'having interposed flexible diaphragm 22 for operating a brake applying member 23 wheniiuid under pressure is admitted through pipe 24 to said diaphragm. Y y

In order to apply the brakes, open or balance the vehicle doors, throw out the 'engine clutch, and close the engine throttle in case yof an emergency, a hand operated valve 25 may be provided having an operating arm 26 to which a pull cord 27 may be attached.

Said valve 25 controlsthe admission of fluid to a diaphragm chamber 28 for operatlng .the clutch lever 17, the chamber 28 containing a flexible diaphragm 29 which is operatively connected to clutch lever 17 through rod 30. c

'The reference numeral 31 indicates diagrammatically the usual accelerator for the engine of a motor vehicle and having an arm 32 for operating the usual engine throttle. A push rod 33 is connected to said arm for manually operating the throttle and according to my invention the throttlemay be operatedby fluid pressure when the emergency cord 27 is pulled. For .this pu'rpose, a .diaphragm chamber 34 is provided, containing a flexible diaphragm 35 adapted to operate a rod 36. Said rod is provided with a yoke 37 having an elongated slot 38 within which a pin 39 carried by the arm 32' engages.

A pipe 40 leads from the valve 25 to the.

diaphragm chambers 28 and 34 and interposed between the pipe -40 and the straight air pipe 41. is a' double check valve 42 contained in casing 43 and adapted to control communication from said pipes to the brake chamber pipe 24. The straight air pipe 41 lis also extended to supply fluid to the valve 15 and interposed so as to control communication from pipes 40 and 41 to pipe 44 leading to valve 15 is a double check valve- 45 contained in casing 46.

A reservoir 47 containin fluid under pressure is connected by a. anched pipe 48 to the door controlling4 valve device 2, the brake valve device 4, and the valve 25, a

reducing valve device 49 being interposedy '24 and operates the flexiblel diaphragm 22 so as to apply the brakes. Fluid supplied to pipe 41 also liows'past the normally open double check val e 45 to pipe 44 and when the clutch lever 1 is moved toward Vthe left to throw out the engine clutch, after the clutch is thrown-out, the lost motion due to the slot 20 is taken up, so that further movem'ent` of the clutch lever operates the arm 16 to rotate valve 15 to a position in which the cavity in the valve connects pipe 44 with piston chamber 11.

Said piston is then shifted to the/right,

so that the valve 14 is operated to connect `pipe 5,1 with pipe 48 through cavity 53.

Fluid under pressureis then suppliedto piston chamber 7 while pipe 52 leading .to piston chamber 5 is connected to' valve chamber 13. )Since valve chamber13 is. also open ,to .the i atmosphere throu'gh` port 54, the piston chamber 5 will now be vented to the atmosphere and the pistons 6 and.,8 will be shifted tothe left or the position for opening rthe vehicle doors. When the foot is removed from the clutch lever 17, the valve 15 will be returned to its' normal position, but the piston 12 will remain in its door opening position until the brakes-are released.

When the brakes are released by operation of the brake valve device 4, kfluid is also released from piston 'chamber 11 by way of passage 55, containing check valve 56, cavity 50 in valve 15, and pipe 44.

In case of an emergency, the conductor. or a passenger on the car may stop the car by pulling the emergency lcord. 27, so that the valve 25 is rotated to bring port 5 7 into line for establishing communication from pipe 48 to pipe 40. Fluid under pressure supplied to pipe 40 will operate the double cheek valvel42; so as to open communication.

`from pipe 40 to pipe 24, at the same timel cutting ofi' the exhaust from the brake chamber pipe 24 through pipe 41 to the brake valve device 4. The flexible diaphragm 22 is then. operated to effect 'an application of the brakes. i

Fluid supplied `to pipe 4() also flows to the diaphragm chamber 28, .so that the flexible diaphragm 29 is operated to effect the shifting of the clutch lever 17 -to the posivtion for throwing Aout the engine clutch.

This movement of the clutch lever also ef ects the operation of the valve 15 so that communication is opened from pipe 44 `to piston chamber 11.l The double check valve 45 is shifted by the pressure in pipe 40 to open communication from pipe 40 to pipe 44, at the same time cutting off communication from pipe 41 to pipe 44. Fluid will then kbe supplied to piston chamber 11, so that piston 12 will operate the valve 14 to '.iexiblediaphragm 35 in v\the diaphragm .chamber 34, so as to shift the rod 36 toward tliefleft and this movement is suiiicient to effect the' shifting of the arm 32 to the throttle closing position, so that power is cut ofi' from the engine of the in otor v e` position, as hereinbefore liicle. When the emergency cord 27 is rev leased the valve 25 is returned to normal position by spring 58, in whichposition a cavity 59 therein connects pipe 40 with an" exhaust port 60. It will tlius'be seen that when the emergency cord is pulled, the brakes will be applied, the vehicle doors opened, the clutch lever operated to throw out the engine clutch, and the throttle of theaccelerator operated to cut off power to the engine.

Having now described my invention, whatv I I claim as new and desire to secure by Letters Patents, is

1. 'In a motor vehicle control apparatus, theConibinati-on with a fluid pressure brake and iuid pressure mechanism for controlling a vehicle door, of a manually con# eo i trolled means operable by the motorman for` controllin said brake and said mechanism and additional manually controlled means operable by al passenger onthe car for controlling said brake and said mechanism in an emergency.

2. In a motor vehicle control apparatus, the coinbinationwith an engine clutch lever, a vehiclebrake, and' door controlling-means,

of manually operable means for eleoting' theY movementl of said clutch lever to dis'- engage the clutch, for operating said door controlling means to open a vehicle door, and for applying'tlie brakes.

3. In a motor vehicle control apparatus, the combination with an engine clutch lever, a vehicle brake, door controlling means, and an engine accelerator, of a single` manually `operable device for eeeting the operation of said clutch lever, the vehicle brake, the door controlling means, and the engineaccelerator.

4. In a-motor vehicle control apparatus, the combination with fluid pressure operable mechanism for. controlling aA vehicle door, a fluid pressure operated brake, an'

engiiie-clutcli lever, an engine accelerator, and fluid pressure means for operating said clutch lever and said accelerator, of a manually operable valve for controlling the fluid pressure for operating said door niechanism, the brake, the clutch lever and the aecelerator.

5. In a motor vehicle control apparatus, the combination with fluid pressure operable mechanism for controlling a vehicle door, a fluid pressure operated brake, and

door, a Huid pressure o erated brake, and

a brake valve device or controlling the Huid pressure for operating said door mechanism and said brake, of an emergency valve for also controlling the @iluid pressure for operating said door mechanism and said brake, and a double check valve for controlling communication from said braken valve device and said emergency valve to said brake.

7. In a motor vehicle control apparatus7 the combination with fluid pressure operable mechanism for controlling a vehicle door, a fluid pressure operated brake, and a brake valve device for controlling the iiuid pressure for operating said door mechanism and said brake, of an emergency valve for also controlling the lud pressure for operating said door mechanism and said brake, and a double check valve` for controlling communication from said brake valve deviceand from said emergency valve .to said door mechanism.

8; In a motor vehicle control apparatus,

the combination with fluid pressure operable mechanism for controlling a vehicle door, a fiuid pressure operated brake, and a brake valve device for controlling the-duid pressure for operating said door mechanism and said brake, of an emergency valve for also controlling the fluid pressure for operating said door mechanism and said brake, a double check valve for controlling communication from said brake valve device and said emergency valve to said brake, and a double check valve for controlling communication from said brake valve device and said emergency valve to said door mechanism.

9. In a motor vehicle control apparatus, the combination with an engine clutch lever, an engine accelerator, a door engine, and a fluid pressure brake, of fluid preslsure means for operating said clutch lever and said accelerator and a valve having a position for supplying fluid to said means for operating the clutch lever to throw out the engine clutch and said accelerator to cut off power to the engine, and for supplying fluid for operating the door engine to open the vehicle doors and for applying the Huid pressure brake.

In testimony W'hereof I have hereunto set my hand.

HENRY Dl HKILL. 

